P0109
MAP/BARO Pressure Circuit Intermittent
2018-2018 Cadillac XT5 3.6L V6
Moderate SeverityPowertrainGeneric (SAE)
The 2018 Cadillac XT5 is equipped with a 3.6L V6 engine. Below you'll find detailed p0109 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The MAP sensor signal is showing intermittent readings.
Symptoms
- Check Engine Light (intermittent)
- Erratic idle
- Stumble on acceleration
Common Causes
- Loose connector
- Damaged wiring
- Intermittent vacuum leak
Diagnostic Steps
- Wiggle test on connector
- Monitor MAP signal
- Check vacuum hose
Repair Notes
Repair connector or wiring.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0109 on Other Vehicles
Common Questions
What does code P0109 mean on a 2018-2018 Cadillac XT5?
P0109 stands for "MAP/BARO Pressure Circuit Intermittent". The MAP sensor signal is showing intermittent readings.
What are the symptoms of P0109 on a Cadillac XT5?
Common symptoms of P0109 include: Check Engine Light (intermittent), Erratic idle, Stumble on acceleration.
What causes P0109 on a 2018-2018 Cadillac XT5?
Common causes of P0109 include: Loose connector, Damaged wiring, Intermittent vacuum leak.
Last updated: March 2026